socket_get_option -- Gets socket options for the socket
Syntax
mixed socket_get_option ( resource socket, int level, int optname )
The socket_get_option() function retrieves the value for
the option specified by the optname parameter for the
socket specified by the socket parameter. socket_get_option()
will return FALSE on failure.
The level parameter specifies the protocol level at
which the option resides. For example, to retrieve options at the socket level,
a level parameter of SOL_SOCKET would be used. Other
levels, such as TCP, can be used by specifying the protocol number of that level.
Protocol numbers can be found by using the getprotobyname() function.
Table 1. Available Socket Options
Option
Syntax
SO_DEBUG
Reports whether debugging information is being recorded.
SO_ACCEPTCONN
Reports whether socket listening is enabled.
SO_BROADCAST
Reports whether transmission of broadcast messages is supported.
SO_REUSEADDR
Reports whether local addresses can be reused.
SO_KEEPALIVE
Reports whether connections are kept active with periodic transmission
of messages. If the connected socket fails to respond to these messages,
the connection is broken and processes writing to that socket are notified
with a SIGPIPE signal.
SO_LINGER
Reports whether the socket lingers on socket_close() if data is present.
SO_OOBINLINE
Reports whether the socket leaves out-of-band data inline.
SO_SNDBUF
Reports send buffer size information.
SO_RCVBUF
Reports recieve buffer size information.
SO_ERROR
Reports information about error status and clears it.
SO_TYPE
Reports the socket type.
SO_DONTROUTE
Reports whether outgoing messages bypass the standard routing facilities.
SO_RCVLOWAT
Reports the minimum number of bytes to process for socket input operations.
( Defaults to 1 )
SO_RCVTIMEO
Reports the timeout value for input operations.
SO_SNDLOWAT
Reports the minimum number of bytes to process for socket output operations.
SO_SNDTIMEO
Reports the timeout value specifying the amount of time that an output
function blocks because flow control prevents data from being sent.
Note:
This function used to be called socket_getopt() prior
to PHP 4.3.0
Php socket get option Function syntax tag
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Php socket get option syntax tutorial
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